The drift of icebergs under wind action
The drift of icebergs under wind action
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冰山在风力作用下的漂移
DOI：
10.1029/jc093ic04p03608
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发表时间：
1988
影响因子：
--
通讯作者：
B. S. Guily
中科院分区：
文献类型：
--
作者：
M. Crépon;M. Houssais;B. S. Guily
本文研究了风作用下存在混合层时冰山的定常运动。当冰山深度小于或远大于混合层深度时，得到了解析解。给出了几个数值例子。我们的研究结果表明，中等或低强度的风对延伸到温跃层以下的深冰山运动的影响是有限的。此外，冰山的水平尺度越大，风的漂移越小。因此，对于小于10 m s− 1的风，超过1 km长的深冰山的轨迹被证明是地转流的代表。还估计了可能的“升力”的影响。
The steady motion of an iceberg under wind action is studied in the presence of a mixed layer. Analytical solutions are obtained when the iceberg depth is less than or much larger than the mixed layer depth. A few numerical examples are given. Our results show that winds of medium or low strength have a limited effect on the motion of deep icebergs extending below the thermocline. Furthermore, the larger the horizontal scale of the iceberg the smaller the wind drift. Hence for winds of less than 10 m s−1the trajectory of deep icebergs more than 1 km long is shown to be representative of geostrophic currents. The effect of a possible “lift” force is also estimated.